Commit Graph

136 Commits

Author SHA1 Message Date
tsarna 72489e1ea0 uuidgen(2) syscall. Originally from FreeBSD, ported by John Franklin in
PR#23470, with minor updates by me. This is only the syscall support
from that PR, for now.

Changes: port over fix from FreeBSD for multicast address generation.
Changed bcopy to memcpy.  For now, #ifdef notyet the portions of
kern_uuid.c that are meant to be used by (currently nonexistent) other
things in the kernel.  Added syscall to COMPAT_FREEBSD as well, though
that's currently not useful, as any program new enough to use this call
also uses other syscalls we don't (yet) emulate.
2004-01-29 02:00:02 +00:00
cl e7045955c7 kernel part of no-syscall upcall stack return: libpthread registers
an offset between ss_sp and struct sa_stackinfo_t (located in struct
__pthread_st) when calling sa_register.  The kernel increments the
sast_gen counter in struct sastack when an upcall stack is used.
libpthread increments the sasi_stackgen counter in struct
sa_stackinfo_t when an upcall stack is freed.  The kernel compares the
two counters to decide if a stack is free or in use.

- add struct sa_stackinfo_t with sasi_stackgen to count stack use in
  userland
- add sast_gen to struct sastack to count stack use in kernel
- add SA_FLAG_STACKINFO to enable the stackinfo_offset argument in the
  sa_register syscall
- add sa_stackinfo_offset to struct sadata for offset between ss_sp
  and struct sa_stackinfo_t
- add ssize_t stackinfo_offset argument to sa_register, initialize
  struct sadata's sa_stackinfo_offset from it if SA_FLAG_STACKINFO is
  set
- add sa_getstack, sa_getstack0, sa_stackused and sa_setstackfree
  functions to find/use/free upcall stacks and use these where
  appropriate
- don't record stack for upcall in sa_upcall0
- pass sau to sa_switchcall instead of l2 (l2 = curlwp in sa_switchcall)
- add sa_vp_blocker to struct sadata to pass recently blocked lwp to
  sa_switchcall
- delay finding a stack for blocked upcalls to sa_switchcall
- add sa_stacknext to struct sadata pointing to next most likely free
  upcall stack; also g/c sa_stackslist in struct sadata and sast_list
  in struct sastack
- add L_SA_WOKEN flag: LWP is on sa_woken queue
- add L_SA_RECYCLE flag: LWP should be recycled in sa_setwoken
- replace l_upcallstack with L_SA_WOKEN/L_SA_RECYCLE/L_SA_BLOCKING
  flags
- g/c now unused sast_blocker in struct sastack
- make sa_switchcall, sa_upcall0 and sa_upcall_getstate static in
  kern_sa.c
- call sa_upcall_userret only once in userret
- split sa_makeupcalls out of sa_upcall_userret and use to process
  the sa_upcalls queue
- on process exit: mark LWPs sleeping in saunblock interruptible; also
  there are no LWPs sleeping on l->l_upcallstack anymore; also clear
  sa_wokenq_head to prevent unblocked upcalls

additional changes:
- cleanup timerupcall sa_vp == curlwp check
- add check in sa_yield if we didn't block on our way here and we
  wouldn't any longer be the LWP on the VP
- invalidate sa_vp_ofaultaddr after resolving pagefault
2004-01-02 18:52:17 +00:00
thorpej 857f24339f Kernel portion of the fsync_range(2) system call. Written by Bill
Studenmund, and contributed by Wasabi Systems, Inc.
2003-11-15 01:19:38 +00:00
christos 4420def0dc #ifdef _LIBC the semid_t syscalls since we don't define semid_t in userland
except in the libc case.
XXX: Should we define __semid_t instead and make those visible from userland
again? Only ktrace and syscall() get affected.
2003-09-30 20:36:10 +00:00
matt ebb8ea4c89 Constify __sigaction_sigtramp argument 'void * tramp'. 2003-09-26 23:08:24 +00:00
christos b601ca6ba8 __sigaction14 should have been COMPAT_16 a while ago. GC it now. 2003-09-23 14:34:07 +00:00
cl c08e54b26b fix SA/pthread pagefault failure:
- prevent BLOCKED upcalls on double page faults and during upcalls
- make libpthread handle blocked threads which hold locks
- prevent UNBLOCKED upcalls from overtaking their BLOCKED upcall
this adds a new syscall sa_unblockyield
see also http://mail-index.netbsd.org/tech-kern/2003/09/15/0020.html
2003-09-16 13:46:24 +00:00
christos 883b4b0369 we don't need sigreturn and sigcode glue if we are not compat_16 anymore. 2003-09-10 16:43:34 +00:00
christos 1623253ed2 _lwp_setprivate returns void 2003-03-18 18:08:49 +00:00
jdolecek c58bfd1c36 add __sigtimedwait(2) - wait for specified set of signals, with optional
timeout
the semantics of 'timeout' parameter differ to POSIX for the syscall
(not const, may be modified by kernel if interrupted from the wait) -
libc will provide appropriate wrapper

since sigwaitinfo(2) will be implemented as wrapper around sigtimedwait()
too, remove it's reserved slot and move sigqueue slot 'up', freeing
slot #246
2003-02-15 20:54:38 +00:00
thorpej 237ebf04da Reserve slots for the p1003.1b scheduler system calls. 2003-01-24 01:27:21 +00:00
thorpej c8c6d5ea40 Reserve slots for p1003.1b message queue calls. 2003-01-24 01:23:27 +00:00
thorpej 9331f2b780 Allocate a slot for _ksem_timedwait(), although it is not currently
implemented.
2003-01-24 01:17:53 +00:00
thorpej 5db6496bbc Allow the _ksem_*() syscalls to be properly seen by ktruss/kdump. 2003-01-23 23:29:46 +00:00
christos 1dbdd7cc6d sys_ksem -> sys__ksem 2003-01-20 20:24:21 +00:00
christos 4a037b0375 actually, remove ksem.h 2003-01-20 20:04:28 +00:00
christos f64e9a84b1 semaphore.h -> ksem.h 2003-01-20 20:03:38 +00:00
christos 1df6f4ff40 add support for p1003.1b semaphores. From FreeBSD 2003-01-20 20:02:56 +00:00
thorpej e0d8d366df Merge the nathanw_sa branch. 2003-01-18 10:06:22 +00:00
thorpej 39e4cd68c4 Reserve syscall slots for sigwaitinfo(2), sigtimedwait(2), and
sigqueue(2).
2002-12-19 23:51:00 +00:00
jdolecek e0cc03a09b merge kqueue branch into -current
kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe
2002-10-23 09:10:23 +00:00
jdolecek 281be34ad1 claim syscall slots for kqueue(2) and kevent(2) 2002-09-04 07:45:41 +00:00
gmcgarry 5bcbbd40bf MI kernel support for user-level Restartable Atomic Sequences (RAS). 2002-08-28 07:16:33 +00:00
briggs a67324a44a New syscalls: sys_pmc_get_info and sys_pmc_control. 2002-08-07 04:52:53 +00:00
thorpej 011d4d5f44 Add kernel support for having userland provide the signal trampoline:
* struct sigacts gets a new sigact_sigdesc structure, which has the
  sigaction and the trampoline/version.  Version 0 means "legacy kernel
  provided trampoline".  Other versions are coordinated with machine-
  dependent code in libc.
* sigaction1() grows two more arguments -- the trampoline pointer and
  the trampoline version.
* A new __sigaction_sigtramp() system call is provided to register a
  trampoline along with a signal handler.
* The handler is no longer passed to sensig() functions.  Instead,
  sendsig() looks up the handler by peeking in the sigacts for the
  process getting the signal (since it has to look in there for the
  trampoline anyway).
* Native sendsig() functions now select the appropriate trampoline and
  its arguments based on the trampoline version in the sigacts.

Changes to libc to use the new facility will be checked in later.  Kernel
version not bumped; we will ride the 1.6C bump made recently.
2002-07-04 23:32:02 +00:00
eeh 9bd29db83b Use #if defined(_LP64) to determine if we're generating 64-bit binaries,
not #if defined(alpha).
2002-05-03 00:20:56 +00:00
thorpej 9377ba2c38 Linux-compatible clone(2) system call, lifted from the Linux
compatibility module.  Based on patches from Bang Jun-Young <bjy@mogua.org>.
2001-07-01 18:06:11 +00:00
kleink c73bcbb0f8 Slight indentation nit. 2001-04-10 11:03:56 +00:00
thorpej 8740614bad getpid(2), our first MP-safe syscall! 2001-01-27 07:47:26 +00:00
nathanw d75edd2077 Reserve system call slots for getcontext, setcontext, LWPs, and
scheduler activations.
2001-01-08 18:25:35 +00:00
jdolecek fbc7e223d7 utrace(2): rename 'id' parameter to 'label' 2001-01-05 21:42:08 +00:00
jdolecek a80dee65df add utrace(2) - this syscall allows to add user ktrace entries
idea from FreeBSD, but added argument (const char *id) so that it's possible
to differentiate between entries from different sources
2000-12-28 11:10:15 +00:00
mycroft 02d8d5f9bf Define 3 new functions:
* sys_getpid_with_ppid()
* sys_getuid_with_euid()
* sys_getgid_with_egid()
that do the retval[1] hack.  Use them when COMPAT_43 is defined.
2000-12-09 07:04:47 +00:00
mycroft 9682cf0b09 Add the %% separators. 2000-12-09 05:27:28 +00:00
bjh21 a9397f5bfc Changes to syscalls.master to exclude ntp_adjtime(2) entirely if NTP is not
defined.  Changes to other files will follow in a moment.
2000-08-07 17:59:33 +00:00
minoura f6051edef5 Add native issetugid() call.
Implementation from compat/freebsd.
2000-04-21 16:15:39 +00:00
mrg a6f7a7855f implement lchflags(2), which does the chflags(2) dance without following
symlinks, and thus can operate on symlinks.  remove a bogus comment in
chflags(1) that claims symlinks do not have file flags.

XXX: todo -- make chflags(1) use lchflags(2) when given the right options.
2000-04-17 14:31:21 +00:00
christos 3cbe025990 __semctl13 -> ____semctl13 because this now is not called directly.
The fourth argument to it is a pointer to union semun not union semun,
because passing structs and unions to syscalls cannot be handled portably.
2000-01-31 15:12:30 +00:00
mycroft db70ed30f4 Use proper varargs format for __semctl13. 2000-01-23 01:01:30 +00:00
thorpej dc8ecaa15b Overhaul of the SVID IPC facilities, primarily to use the types specified
by the Single UNIX Specification version 2, rather than the SVR2-derived
types.  While I was here, I did a namespace sweep to expose the constants
and strucutures, and structure members described by SUSv2; documentation
updates coming shortly.

Fixes kern/8158.
1999-08-25 05:05:48 +00:00
thorpej bee019244f Remove two lines that were apparently added by accident. 1999-07-12 23:01:27 +00:00
kleink e79a283e47 XSH5: change function signature to `void *sbrk(intptr_t)'. 1999-07-12 21:55:19 +00:00
wrstuden d55b282c54 Add fhopen, fhstat, fhstatfs. 1999-06-29 22:15:31 +00:00
thorpej 0cec533f77 Add mlockall at #242 and munlockall at #243. 1999-06-15 23:28:16 +00:00
christos 3f8f92f2b4 Add EXCL keyword as described in tech_kern, and fix comments. Make the
vtrace syscall UNIMPL because it is.
1999-06-09 04:25:30 +00:00
thorpej 8b35c542b5 mincore: caddr_t -> void * 1999-06-08 03:07:39 +00:00
kleink 38c7f65f0c Sync __getlogin()'s namelen argument with the libc-internal declaration
(u_int vs. size_t).
1999-03-28 17:29:52 +00:00
sommerfe 095cd96cd5 Change namei cache to record vnode->(parent,name) entries (for directories).
Add kernel implementation of getcwd() which uses this cache, falling
back to reading the filesystem on a cache miss.
Along for the ride: add new VOP_FSYNC flag FSYNC_RECLAIM indicating
that a reclaim is being done, so only a "shallow" fsync is needed.
1999-03-22 17:01:55 +00:00
kleink dfffb2f357 * Due to addition and use of socklen_t, make the socket option and address
arguments passed to accept(), bind(), connect(), getpeername(), getsockname(),
getsockopt(), recvfrom(), sendto() and sendmsg() unsigned, which also elimiates
a few casts.
* Reflect the (now) signedness of msg_iovlen, which necessiates the addition
of a few casts.
1999-02-10 18:02:28 +00:00
christos bee9dafdf5 defopt COMPAT_43 1998-12-10 15:07:01 +00:00